/* Branding and layout inspired by corporate design; responsive by default */
:root {
  --brand: #0b4f8a;
  --brand-dark: #0a3f72;
  --bg: #f7f8fa;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #00b6a6;
  --card: #ffffff;
  --shadow: 0 8px 24px rgba(0,0,0,.08);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--text); background: #fff; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.site-header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid #e5e7eb; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; color: var(--brand); text-decoration: none; font-family: Inter, sans-serif; letter-spacing: .5px; }
.nav { display: flex; gap: 14px; align-items: center; }
.nav a { text-decoration: none; color: #374151; font-weight: 500; padding: 6px 8px; border-radius: 6px; }
.nav a:hover { background: #f3f4f6; }
.cta { background: var(--brand); color: #fff; padding: 8px 12px; border-radius: 6px; text-decoration: none; font-weight: 600; }
.menu-toggle { display: none; }

.hero { height: 60vh; min-height: 420px; background-size: cover; background-position: center; display:flex; align-items: center; position: relative; color: #fff; }
.hero:before { content: ""; position: absolute; left: 0; top: 0; right: 0; bottom: 0; background: rgba(0,0,0,.35); }
.hero-content { position: relative; z-index: 1; max-width: 800px; padding: 0 20px; }
.tagline { font-size: 2.8rem; line-height: 1.05; margin: 0 0 12px; font-weight: 800; letter-spacing: .5px; color: #fff; }
.lead { color: #e5e7eb; font-size: 1.05rem; }
.cta-row { display: flex; gap: 12px; align-items: center; margin-top: 14px; }
.btn { display: inline-block; padding: 12px 18px; border-radius: 8px; text-decoration: none; font-weight: 700; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-secondary { background: #e9eef7; color: #111; border: 1px solid #d8e2f0; }
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.5); display: none; align-items: center; justify-content: center; padding: 20px; }
.modal[aria-hidden="false"] { display: flex; }
.modal-content { background:#fff; border-radius: 8px; padding: 20px; width: 100%; max-width: 520px; position: relative; box-shadow: 0 10px 25px rgba(0,0,0,.2); }
.modal-close { position: absolute; top: 8px; right: 8px; border: 0; background: transparent; font-size: 22px; cursor: pointer; }

.section { padding: 72px 0; }
.section h2 { font-size: 2rem; margin-bottom: 12px; }
.lead { margin: 6px 0 18px; color: var(--muted); }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.about-card { background: #fff; border: 1px solid #e5e7eb; padding: 18px; border-radius: 10px; }
.credibility { margin-top: 18px; padding: 12px; background: #f8fafc; border-radius: 8px; border: 1px solid #e5e7eb; }
.cred-title { font-size: 1.1rem; margin-bottom: 8px; }

.cred-chips { display: flex; gap: 12px; flex-wrap: wrap; padding: 8px 0; }
.cred-item { padding: 6px 12px; border-radius: 999px; background: #eef3f8; font-size: .9rem; }

.filters { display: flex; gap: 12px; flex-wrap: wrap; margin: 12px 0 18px; }
.filter { padding: 8px 14px; border-radius: 999px; border: 1px solid #d1d5db; background: #fff; cursor: pointer; font-weight: 600; }
.filter.active { background: var(--brand); color: #fff; border-color: transparent; }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; margin-top: 6px; }
.card { background: var(--card); border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.card img { width: 100%; height: 140px; object-fit: cover; display: block; }
.card-body { padding: 12px; }
.card:hover { transform: translateY(-4px); box-shadow: 0 6px 16px rgba(0,0,0,.08); }

.section.case-studies .case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-top: 12px; }
.case-card { background: #fff; border: 1px solid #e5e7eb; padding: 14px; border-radius: 10px; }

.office-tour { margin-top: 18px; }
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; }
.video-wrap iframe { position: absolute; top:0; left: 0; width: 100%; height: 100%; border:0; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.5); display: none; align-items: center; justify-content: center; padding: 20px; }
.modal[aria-hidden="false"] { display: flex; }
.modal-content { background:#fff; border-radius: 8px; padding: 20px; width: 100%; max-width: 520px; position: relative; box-shadow: 0 10px 25px rgba(0,0,0,.2); }
.modal-close { position: absolute; top: 8px; right: 8px; border: 0; background: transparent; font-size: 22px; cursor: pointer; }

.site-footer { background: #111; color: #ddd; padding: 24px 0; text-align: center; font-size: 14px; }

@media (max-width: 900px) {
  .tagline { font-size: 2rem; }
  .hero { height: 70vh; }
}
@media (max-width: 600px) {
  .nav { display: none; }
  .menu-toggle { display: inline-block; background: #fff; border: 1px solid #ddd; padding: 8px 12px; border-radius: 6px; }
  .tagline { font-size: 1.8rem; text-wrap: balance; }
}